# Hydrochloric acid (HC) and sodium fluoride (NaF) react to produce hydrogen fluoride (HF) and sodium chloride (NaCl). How many moles of HF are produced per mole of HCl used?

May 14, 2017

$H C l \left(a q\right) + N a F \left(a q\right) \rightarrow H F \left(a q\right) + N a C l \left(a q\right)$
We can see that the number of moles of $H C l$ is equal to the moles of $H F$ produced because both have equal coefficients (an implied 1).